Priming device for internal-combustion engines



B. J. DONADA.

PRIMING DEVICE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FIILED JUNE 21. 1920.

1,363,093, Patented Dec. 21, 1920.

2 SHEETS-SHEET I.

J20)? a XNVENTOR ATTORNEY l8 aieurmcw WlTNESSfS B. LDONADA.

APPLICATION FILED JUNE 21, I920.

Patented Dec. 21, 1920.

2 SHEETS-SHEET 2.

B. JjanaaZa MENTOR A'ITORNEY PRIMING DEVICE FOR-INTERNAL COMBUSTION ENGINES.

H On-ZPAMM WITNESSES UNITEE STATES E ATENT OFFICE.

BENITO J. DONADA, 0F REFUGIO, TEXAS, ASSIGNOB OE ONE-THIRD T0 JAMES R. DOUGHERTY, 0F BEEVILLE, TEXAS, AND ONE-THIRD T0 BENJAMIN SHELTON,

OF REFUGIO, TEXAS.

PRIMING- DEVICE FOR INTERNAL-COMBUSTION ENGINES.

Application filed June 21, 1920.

To all whom it may concern 7 Be it known that I, BENITO J. DoNAnA, a citizen of the United States, residing at Refugio, in the county of Refugio and State of Texas, have invented new and useful Improvements in Priming Devices for Intermil-Combustion Engines, of which the following is a specification.

This invention comprehends certain new and useful improvements in priming devices for internal combustion engines, such as illustrated in my application bearing Ser. No. 297,586, and allowed May 5, 1920.

One of the chief characteristics of this invention, resides in the provision of an injector embodied in the connection between the fuel tank and the intake manifold of the engine, and operable to drive or force the fuel to the intake manifold at a point adja cent its connection with the cylinder of the motor.

Another object of importance resides in the construction and arrangement of parts with a view of eliminating leakage through the priming device under all conditions.

The nature and advantages of the invention will be better understood when the following detailed description is read in connection with the accompanying drawings, the invention residing in the construction, combination and arrangement of parts as claimed.

In the drawings forming part of this application, like numerals of reference indicate similiar parts in the several views, and wherein Figure l is a view in elevation showing the apparatus or device applied.

Fig. 2 is enlarged fragmentary sectional View.

Fig. 3 is a view partly in section of the mixing device.

Fig. 4: is an enlarged detail sectional view of the air controlling means.

Fig. 5 is a perspective view of a bracket.

Referring to the drawings in detail 10 indicates the intake manifold of the motor, the

exhaust manifold being indicated at 11. The fuel supply tank of an automobile or the like is indicated at 12, and establishing coni- Specification of Letters Patent.

Patented Dec. 21, 1920.

Serial No. 390,550.

munication between the tank and the carbureter 13 is. a feed line 14. Rising from the feed line 14 is a tubular member 15 which passes through the floor board of the vehicle and terminates in juxtaposition to the dash-board in convenient reach of the operator. The tubular member 15 receives a needle valve 16 which is equipped with a knob 17 at its upper end. The upper end of the tubular member is threaded into a sleeve 17 having an apertured flange for association with a supporting bracket as shown in Fig. 1. The valve 16 is also threaded in the sleeve 17. Projecting laterally and forwardly from the tubular member 15 adjacent its point of connection with the feed line 1%, is a branch pipe 18 which is normally secured to the curved pipe 19 which extends upwardly and supports at its upper end a mixing device 20. This device includes a tubular portion which is received by an opening provided in the intake manifold at a point adjacent its upper end, and which tubular portion is provided with a plurality of perforations 21. The opposite end of the pipe 19 is detachably associated with a tubular casing 22 forming a part of an injector mounted upon the clash-board in convenient reach of the driver. This casing 22 is supported by a bracket 23 secured to the dash and is utilized to drive or force the charge of fuel to the intake manifold when use of the priming device is desired.

The bracket 23 is provided with an opening to receive the threaded end of the casing 22, which is equipped with nuts 25 at the opposite sides of the bracket as clearly shown. (hie end of the nipple 2d is threaded into the adjacent end of the tubular casing 22, while the opposite end of the nipple accommodates a threaded cap nut 26. A rod 27 is arranged to reciprocate within the casing 22 and carries at its lower end a hollow plunger 28 and has diameter less than the internal diameter of the casing 22 so as to be slightly spaced from the wall of the latter. A spring 29 surrounds the rod 27 and operates to forcibly move the plunger 28 through the casing 22, after this plunger has been retracted and the spring depressed.

The rod 27 projects through an opening 30.

The rod 27 is further provided with an en-.

largement 31 arranged above the nipple 2%, which is adapted to be fitted within the nipple when the parts are associated to prevent the escape or leakage of fuel or air through "the dashboard is an air line pipe 33 which extends. through the dash and enters an opening in the mixing device 20. The pipe is bent to contact with the exhaust manifold 11 so that the pipe will be heated by the products of combustion, with a view of heating the air passing through the pipe prior to its introduction into the mixing ,device 20. This, obviouslv provides for a high combustible mixture which is most desired for operation of a motor. Carried by the exposed extremity of the pipe 33 a screw threaded bushing 3 1, the latter being provided with slots 35 for admitting air to the exterior of the bushing and also to the pipe 33. These slots are controlled by a cap 36 which is threaded on the bushing, and disposed within convenient reach of the driver to be easily manipulated.

It is to be noted that the casing 22 of the injector extends above the highest level of the fuel contained in the tank 12, as does also the pipe 19, so that any small amount of gas which may be contained in the injector and pipe 19 after the motorhas started, will gradually be drawn into the manifold 10. In practice, when it is desired to use the priming device, the needle valve 16 is adjust'e'd to establish communication between the feed line 14 and the branch 18 of the supply pipe 19. The'fuel from the tank 12 then entersjboth the pipe 19 and the casing 22 of the injector. The cap 36 is also adjusted to admit the requisite amount of air into the .bushing and air line 33. The cap nut 26 is then disengaged fromthe bushing 25 to permit of the operation of the plunger 28, and the latter is then retracted within the casing against the tension of the spring 29. By reason of the fact that the plunger 28 is spaced fromthe wall of the casing 22,

the plunger 28 will pass through the fuel contained in the casing without possibility of pushing the latter through the upper end thereof. When the plunger is in retracted position, the rod 27 isreleased by the operator, and the spring 29 functions to forcibly drive the fuel contained in the casing 22 and the pipe 19 into the mixing device 20 which is associated with the intake manifold. Consequently, the device is not only positive in its operation and for the purpose intended but the gas and air is properly mixed prior to its introduction to the motor.

lVhile it is believed that from the foregoing description the nature and advantages of the invention will be readily apparent, I desire to have it understood that I do not limit myself to the details herein shown and described, and that such changes may be resorted to when desired as fall within the scope of what is claimed.

What I claim is:

1. A priming device for engines comprising an intake manifold a'mixing device associated with the intake manifold, a pipe establishing communication between the gasoline supply and said mixing device, means for controlling said communication, and an injector coupled with said pipe and including a tubular casing, a spring pressed plunger operating within the casing, said plunger being hollow and of a diameter less than the diameter of said casing, an air pipe communicating with said mixing device and means for controlling the admittance of air thereto.

2. A priming device for engines comprising an intake manifold a mixing device associated with an intakemanifold, a supply pipe establishing communication between the fuel supply and said mixing device, an injector coupled with said device and including a casing and a spring pressed plunger operating within the casing, means for controlling communication between said fuel supply and mixing device, an air pipe communicating with the mixing device, means for controlling the admittance of air there to, and said plunger and last mentioned means being arranged in juxta-position at a point convenientto the operator.

3. priming device for engines, compressing an intake manifold, a fuel tank and feed pipe establishing communication between the tank and said manifold, a tubular member coupled with said feed pipe, a

branch pipe establishing communication between the tubularmember and the said manifold, a mixing device interposed between said branch pipe and manifold, a needle valve operating. within the tubular member and controlling communication be tween the feed pipe and branch pipe, and arranged within convenient reach of the operator, an air pipe communicating with said mixing device, and means disposed in convenient reach of the operator for controlling the admittance of air thereinto.

4. A priming device for engines comprising in combination an intake manifold, a fuel supply tank, a feed pipe establishing communication between the tank and said manifold, a mixing device associated with the manifold, a tubular member coupled to the feed pipe, a branch pipe leading from the tubular member and terminally connected With the mixing device, a needle valve operating Within the tubular member for controlling communication between the feed pipe and the branch pipe, and an injector coupled with the supply pipe including a spring pressed plunger, an air pipe commu- 10 nicating with the mixing device, and means for controlling the admittance of air thereto.

In testimony whereof I aflix my signature.

BENITO J. DONADA. 

